4040361 has 24 divisors (see below), whose sum is σ = 6522880. Its totient is φ = 2484432.

The previous prime is 4040359. The next prime is 4040371. The reversal of 4040361 is 1630404.

It is not a de Polignac number, because 4040361 - 2¹ = 4040359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4040371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2520 + ... + 3798.

Almost surely, 2^4040361 is an apocalyptic number.

It is an amenable number.

4040361 is a deficient number, since it is larger than the sum of its proper divisors (2482519).

4040361 is a wasteful number, since it uses less digits than its factorization.

4040361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4040361 is about 2010.0649243246. The cubic root of 4040361 is about 159.2722285527.

Adding to 4040361 its reverse (1630404), we get a palindrome (5670765).

It can be divided in two parts, 40 and 40361, that added together give a square (40401 = 201²).

The spelling of 4040361 in words is "four million, forty thousand, three hundred sixty-one".